Power Systems Which of the following transformer is used in sub station for operating a protective relay? capacitor voltage transformer distribution transformer auto transformer All of these capacitor voltage transformer distribution transformer auto transformer All of these ANSWER DOWNLOAD EXAMIANS APP
Power Systems What will be the thermal efficiency of a 240 V, 1000 W electric kettle if it brings 2 liters of water at 15° C to boiling point 15 Minutes 78.96 %. 80.25 %. 79.33 %. 74.56 %. 78.96 %. 80.25 %. 79.33 %. 74.56 %. ANSWER DOWNLOAD EXAMIANS APP
Power Systems On what factor does the performance of a circuit breaker depend? Breaking speed. None of these. Both A and C. Critical length of breaking. Breaking speed. None of these. Both A and C. Critical length of breaking. ANSWER DOWNLOAD EXAMIANS APP
Power Systems A string insulator has 4 units. The voltage across the bottom most unit is 33.33% of total voltage. Its string efficiency is 66.66% 75% 33.33% 25% 66.66% 75% 33.33% 25% ANSWER DOWNLOAD EXAMIANS APP
Power Systems Condition for zero voltage regulation is tanφ = R/X tanφ = X/R cosφ = R/X cosφ = X/R tanφ = R/X tanφ = X/R cosφ = R/X cosφ = X/R ANSWER DOWNLOAD EXAMIANS APP
Power Systems Pipes carrying steam are generally of cobalt. aluminium. cast iron. steel. cobalt. aluminium. cast iron. steel. ANSWER DOWNLOAD EXAMIANS APP
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